import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONObject;

import com.JDBCUtils.JDBCUtils;


public class getVersion extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public getVersion() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		JSONObject resultObject=new JSONObject();
		
		
		String sqlGetCurVersion="select * from version";
		JDBCUtils jdbcUtils=new JDBCUtils();
		
		List<Map<String, Object>>getCurVerResultList=null;
		try {
			getCurVerResultList=jdbcUtils.query(sqlGetCurVersion, null);
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			resultObject.put("code", -1);
			out.print(resultObject);
			out.close();
			jdbcUtils.close();
			e.printStackTrace();
			return;
		}
		
		resultObject.put("code", 1);
		resultObject.put("current_version",getCurVerResultList.get(0).get("current_version"));
		resultObject.put("update_url",getCurVerResultList.get(0).get("update_url"));
		
		out.print(resultObject);
		jdbcUtils.close();
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
